<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--权限数据列表区-->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <!--数据列表区-->
      <el-table :data="rolelist" style="width: 100%" stripe border>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
              :class="['bdbottom',i1 === 0 ? 'bdtop' : '','vcenter']"
            >
              <!--渲染一级权限-->
              <el-col :span="5">
                <el-tag closable @close="deleteTag(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--渲染二级和三级权限-->
              <el-col :span="19">
                <el-row
                  v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                  :class="[i2 === 0 ? '':'bdtop','vcenter']"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="deleteTag(scope.row,item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      v-for="(item3) in item2.children"
                      :key="item3.id"
                      type="warning"
                      closable
                      @close="deleteTag(scope.row,item3.id)"
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleDesc" label="描述"></el-table-column>
        <el-table-column label="操作" style="width=300px">
          <template slot-scope="scope">
            <el-button size="mini" icon="el-icon-edit" type="primary">编辑</el-button>
            <el-button size="mini" icon="el-icon-delete" type="danger">删除</el-button>
            <el-button
              size="mini"
              icon="el-icon-setting"
              type="warning"
              @click="setRightRolesDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!--分配权限对话框-->
    <el-dialog title="分配权限" :visible.sync="showRightDialogFlag" width="50%" @close="setRightDialogClosed">
      <el-tree :data="rightsTree" :props="defaultProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="showRightDialogFlag = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      rolelist: [],
      showRightDialogFlag: false,
      rightsTree:[],
      defaultProps:{
        children: 'children',
        label: 'authName'
      },
      defKeys:[],
      roleId:''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!!!')
      }
      this.rolelist = res.data
      console.log(res)
    },
    deleteTag(role, rightsId) {
      this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(
            `roles/${role.id}/rights/${rightsId}`
          )
          if (res.meta.status !== 200) {
            return this.$message.error('删除权限失败!')
          }
          role.children = res.data
          this.$message({
            type: 'success',
            message: '删除权限成功!'
          })
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
    },
    async setRightRolesDialog(role) {
      const {data:res} = await this.$http.get('rights/tree');
      if(res.meta.status !== 200){
        return this.$message.error("获取权限树形结构失败！！！");
      }
      this.$message.success("获取权限树形结构成功!!!");
      this.rightsTree = res.data;
      console.log(res.data);
      this.getLeafKeys(role,this.defKeys);
      this.showRightDialogFlag = true;
      this.roleId = role.id;
    },
    getLeafKeys(node,arr){
      if(!node.children){
        return arr.push(node.id);
      }
      node.children.forEach(element => {
        this.getLeafKeys(element,arr);
      });
    },
    setRightDialogClosed(){
      this.defKeys=[];
    },
    async allotRights(){
      const keys = [...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()];
      console.log(keys);
      const idStr = keys.join(",");
      console.log(idStr);
      const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr});
      if(res.meta.status !== 200){
        return this.$message.error("角色授权失败！");
      }
      this.$message.success("角色授权成功!");
      this.showRightDialogFlag = false;
      this.getRolesList();
    }
  }
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
</style>